Merge pull request kriasoft#296 from zhiyelee/master

Bugfix: keep port of server

Author: koistya

src/server.js

@@ -10,6 +10,7 @@ import Html from './components/Html';
 
 const server = global.server = express();
 const port = process.env.PORT || 5000;
+server.set('port', port);
 
 //
 // Register Node.js middleware